Dumortierite and Astrophyllite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.26-3.41
3.2-3.4
Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Uneven, Brittle, Metallic
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
Perfect on [001] imperfect on [100]
Chemical Composition
AlAl6O3BSi3O18
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Dumortierite and Astrophyllite Chemical Formula
While comparing Dumortierite and Astrophyllite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Dumortierite and Astrophyllite chemical formula.
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
- Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Dumortierite and Astrophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dumortierite and Astrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Astrophyllite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 3.2-3.4 whereas that of Astrophyllite is 3.2-3.4.